Package com.sun.jersey.samples.contacts.server

Source Code of com.sun.jersey.samples.contacts.server.UserResource

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package com.sun.jersey.samples.contacts.server;

import com.sun.jersey.atom.abdera.ContentHelper;
import com.sun.jersey.samples.contacts.models.User;
import java.util.Date;
import javax.annotation.security.RolesAllowed;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import org.apache.abdera.model.Entry;

/**
* <p>Resource to manage an individual user for the Contacts System.</p>
*/
public class UserResource extends BaseResource {


    // ------------------------------------------------------------ Constructors


    /**
     * <p>Construct a configured instance of this resource class.</p>
     *
     * @param uriInfo Context URI information to be injected
     * @param contentHelper Context injected helper for Atom entry content
     * @param username Username of the specified user
     */
    public UserResource(UriInfo uriInfo, ContentHelper contentHelper, String username) {
        this.uriInfo = uriInfo;
        this.contentHelper = contentHelper;
        this.username = username;
    }


    // ------------------------------------------------------ Instance Variables


    /**
     * <p>Username of the specified user.</p>
     */
    private String username = null;


    // ---------------------------------------------------------- Public Methods


    /**
     * <p>Delete the contact information for the specified user, as well as
     * all contacts owned by this user.</p>
     */
    @RolesAllowed("admin")
    @DELETE
    public Response delete() {
        synchronized (Database.users) {
            User user = Database.users.remove(username);
            if (user == null) {
                return Response.status(404).
                        type("text/plain").
                        entity("User '" + username + "' not found\r\n").
                        build();
            } else {
                Database.usersUpdated = new Date();
                synchronized (Database.contacts) {
                    Database.contacts.remove(username);
                }
            }
        }
        return Response.ok().build();
    }


    /**
     * <p>Return the contact information for the specified user.  Note that
     * the <code>password</code> property will <strong>NOT</strong> be
     * included.</p>
     */
    @RolesAllowed("admin")
    @GET
    @Produces({"application/atom+xml",
               "application/atom+xml;type=entry",
               "application/atom+json",
               "application/atom+json;type=entry",
               "application/json",
               "application/xml",
               "text/xml"})
    public Response get() {
        Entry entry = null;
        synchronized (Database.users) {
            User user = Database.users.get(username);
            if (user == null) {
                return Response.status(404).
                        type("text/plain").
                        entity("User '" + username + "' not found\r\n").
                        build();
            }
            entry = abdera.newEntry();
            entry.setId(user.getId());
            entry.setTitle(user.getUsername());
            entry.setUpdated(user.getUpdated());
            String uri = uriInfo.getRequestUriBuilder().build().toString();
            entry.addLink(uri, "self");
            entry.addLink(uri, "edit");
            contentHelper.setContentEntity(entry, MediaType.APPLICATION_XML_TYPE, user);
        }
        return Response.ok(entry).build();
    }


    /**
     * <p>Update the contact information for the specified user.</p>
     */
    @RolesAllowed("admin")
    @PUT
    @Consumes({"application/atom+xml",
               "application/atom+xml;type=entry",
               "application/xml",
               "text/xml"})
    public Response put(Entry entry) {

        // Validate the incoming user information independent of the database
        User user = contentHelper.getContentEntity(entry, MediaType.APPLICATION_XML_TYPE, User.class);
        StringBuilder errors = new StringBuilder();
        if ((user.getPassword() == null) || (user.getPassword().length() < 1)) {
            errors.append("Missing 'password' property\r\n");
        }

        if (errors.length() > 0) {
            return Response.status(400).
                    type("text/plain").
                    entity(errors.toString()).build();
        }

        // Validate conditions that require locking the database
        synchronized (Database.users) {

            // Look up the original user information
            User original = Database.users.get(username);
            if (original == null) {
                return Response.status(404).
                        type("text/plain").
                        entity("User '" + username + "' does not exist\r\n").
                        build();
            }

            // Update the original user information
            original.setPassword(user.getPassword());
            original.setUpdated(new Date());
            Database.usersUpdated = new Date();
            return Response.
                    ok().
                    build();

        }

    }


}
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